ironic/ironic/tests/unit/common/test_image_service.py

591 lines
29 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import builtins
import datetime
from http import client as http_client
import io
import os
import shutil
from unittest import mock
from oslo_config import cfg
from oslo_utils import uuidutils
import requests
from ironic.common import exception
from ironic.common.glance_service import image_service as glance_v2_service
from ironic.common import image_service
from ironic.tests import base
class HttpImageServiceTestCase(base.TestCase):
def setUp(self):
super(HttpImageServiceTestCase, self).setUp()
self.service = image_service.HttpImageService()
self.href = 'https://127.0.0.1:12345/fedora.qcow2'
@mock.patch.object(os.path, 'exists', autospec=True)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_http_scheme(self, head_mock, path_mock):
self.href = 'http://127.0.0.1:12345/fedora.qcow2'
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
path_mock.assert_not_called()
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_false(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', 'False')
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_false_error(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', 'False')
head_mock.side_effect = requests.ConnectionError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_true(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', 'True')
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_true_error(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', 'True')
head_mock.side_effect = requests.ConnectionError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_valid_path(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_custom_timeout(self, head_mock):
cfg.CONF.set_override('webserver_connection_timeout', 15)
response = head_mock.return_value
response.status_code = http_client.OK
self.service.validate_href(self.href)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=15)
response.status_code = http_client.NO_CONTENT
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
response.status_code = http_client.BAD_REQUEST
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_connect_error(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response = mock.Mock()
response.status_code = http_client.OK
head_mock.side_effect = requests.ConnectionError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_error(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
head_mock.side_effect = requests.RequestException()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_verify_os_error(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
head_mock.side_effect = OSError()
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
head_mock.assert_called_once_with(self.href, verify='/some/path',
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def test_validate_href_error_with_secret_parameter(self, head_mock):
cfg.CONF.set_override('webserver_verify_ca', 'False')
head_mock.return_value.status_code = 204
e = self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href,
self.href,
True)
self.assertIn('secreturl', str(e))
self.assertNotIn(self.href, str(e))
head_mock.assert_called_once_with(self.href, verify=False,
timeout=60)
@mock.patch.object(requests, 'head', autospec=True)
def _test_show(self, head_mock, mtime, mtime_date):
head_mock.return_value.status_code = http_client.OK
head_mock.return_value.headers = {
'Content-Length': 100,
'Last-Modified': mtime
}
result = self.service.show(self.href)
head_mock.assert_called_once_with(self.href, verify=True,
timeout=60)
self.assertEqual({'size': 100, 'updated_at': mtime_date,
'properties': {}}, result)
def test_show_rfc_822(self):
self._test_show(mtime='Tue, 15 Nov 2014 08:12:31 GMT',
mtime_date=datetime.datetime(2014, 11, 15, 8, 12, 31))
def test_show_rfc_850(self):
self._test_show(mtime='Tuesday, 15-Nov-14 08:12:31 GMT',
mtime_date=datetime.datetime(2014, 11, 15, 8, 12, 31))
def test_show_ansi_c(self):
self._test_show(mtime='Tue Nov 15 08:12:31 2014',
mtime_date=datetime.datetime(2014, 11, 15, 8, 12, 31))
@mock.patch.object(requests, 'head', autospec=True)
def test_show_no_content_length(self, head_mock):
head_mock.return_value.status_code = http_client.OK
head_mock.return_value.headers = {}
self.assertRaises(exception.ImageRefValidationFailed,
self.service.show, self.href)
head_mock.assert_called_with(self.href, verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_http_scheme(self, req_get_mock, shutil_mock):
self.href = 'http://127.0.0.1:12345/fedora.qcow2'
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_verify_false(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', 'False')
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=False,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_verify_true(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', 'True')
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_verify_path(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_fail_verify_false_connerror(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', False)
req_get_mock.side_effect = requests.ConnectionError()
file_mock = mock.Mock(spec=io.BytesIO)
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_fail_verify_false_ioerror(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', False)
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
shutil_mock.side_effect = IOError
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=False,
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_verify_true_connerror(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response_mock = mock.Mock()
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
req_get_mock.side_effect = requests.ConnectionError
file_mock = mock.Mock(spec=io.BytesIO)
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_fail_verify_true_ioerror(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
shutil_mock.side_effect = IOError
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_fail_verify_true_oserror(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_verify_ca', '/some/path')
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
shutil_mock.side_effect = OSError()
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify='/some/path',
timeout=60)
@mock.patch.object(shutil, 'copyfileobj', autospec=True)
@mock.patch.object(requests, 'get', autospec=True)
def test_download_success_custom_timeout(
self, req_get_mock, shutil_mock):
cfg.CONF.set_override('webserver_connection_timeout', 15)
response_mock = req_get_mock.return_value
response_mock.status_code = http_client.OK
response_mock.raw = mock.MagicMock(spec=io.BytesIO)
file_mock = mock.Mock(spec=io.BytesIO)
self.service.download(self.href, file_mock)
shutil_mock.assert_called_once_with(
response_mock.raw.__enter__(), file_mock,
image_service.IMAGE_CHUNK_SIZE
)
req_get_mock.assert_called_once_with(self.href, stream=True,
verify=True,
timeout=15)
class FileImageServiceTestCase(base.TestCase):
def setUp(self):
super(FileImageServiceTestCase, self).setUp()
self.service = image_service.FileImageService()
self.href = 'file:///home/user/image.qcow2'
self.href_path = '/home/user/image.qcow2'
@mock.patch.object(os.path, 'isfile', return_value=True, autospec=True)
def test_validate_href(self, path_exists_mock):
self.service.validate_href(self.href)
path_exists_mock.assert_called_once_with(self.href_path)
@mock.patch.object(os.path, 'isfile', return_value=False, autospec=True)
def test_validate_href_path_not_found_or_not_file(self, path_exists_mock):
self.assertRaises(exception.ImageRefValidationFailed,
self.service.validate_href, self.href)
path_exists_mock.assert_called_once_with(self.href_path)
@mock.patch.object(os.path, 'getmtime', return_value=1431087909.1641912,
autospec=True)
@mock.patch.object(os.path, 'getsize', return_value=42, autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_show(self, _validate_mock, getsize_mock, getmtime_mock):
_validate_mock.return_value = self.href_path
result = self.service.show(self.href)
getsize_mock.assert_called_once_with(self.href_path)
getmtime_mock.assert_called_once_with(self.href_path)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual({'size': 42,
'updated_at': datetime.datetime(2015, 5, 8,
12, 25, 9, 164191),
'properties': {}}, result)
@mock.patch.object(os, 'link', autospec=True)
@mock.patch.object(os, 'remove', autospec=True)
@mock.patch.object(os, 'access', return_value=True, autospec=True)
@mock.patch.object(os, 'stat', autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_download_hard_link(self, _validate_mock, stat_mock, access_mock,
remove_mock, link_mock):
_validate_mock.return_value = self.href_path
stat_mock.return_value.st_dev = 'dev1'
file_mock = mock.Mock(spec=io.BytesIO)
file_mock.name = 'file'
self.service.download(self.href, file_mock)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual(2, stat_mock.call_count)
access_mock.assert_called_once_with(self.href_path, os.R_OK | os.W_OK)
remove_mock.assert_called_once_with('file')
link_mock.assert_called_once_with(self.href_path, 'file')
@mock.patch.object(os, 'sendfile', return_value=42, autospec=True)
@mock.patch.object(os.path, 'getsize', return_value=42, autospec=True)
@mock.patch.object(builtins, 'open', autospec=True)
@mock.patch.object(os, 'access', return_value=False, autospec=True)
@mock.patch.object(os, 'stat', autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_download_copy(self, _validate_mock, stat_mock, access_mock,
open_mock, size_mock, copy_mock):
_validate_mock.return_value = self.href_path
stat_mock.return_value.st_dev = 'dev1'
file_mock = mock.MagicMock(spec=io.BytesIO)
file_mock.name = 'file'
input_mock = mock.MagicMock(spec=io.BytesIO)
open_mock.return_value = input_mock
self.service.download(self.href, file_mock)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual(2, stat_mock.call_count)
access_mock.assert_called_once_with(self.href_path, os.R_OK | os.W_OK)
copy_mock.assert_called_once_with(file_mock.fileno(),
input_mock.__enter__().fileno(),
0, 42)
@mock.patch.object(os, 'sendfile', autospec=True)
@mock.patch.object(os.path, 'getsize', return_value=42, autospec=True)
@mock.patch.object(builtins, 'open', autospec=True)
@mock.patch.object(os, 'access', return_value=False, autospec=True)
@mock.patch.object(os, 'stat', autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_download_copy_segmented(self, _validate_mock, stat_mock,
access_mock, open_mock, size_mock,
copy_mock):
# Fake a 3G + 1k image
chunk_size = image_service.SENDFILE_CHUNK_SIZE
fake_image_size = chunk_size * 3 + 1024
fake_chunk_seq = [chunk_size, chunk_size, chunk_size, 1024]
_validate_mock.return_value = self.href_path
stat_mock.return_value.st_dev = 'dev1'
file_mock = mock.MagicMock(spec=io.BytesIO)
file_mock.name = 'file'
input_mock = mock.MagicMock(spec=io.BytesIO)
open_mock.return_value = input_mock
size_mock.return_value = fake_image_size
copy_mock.side_effect = fake_chunk_seq
self.service.download(self.href, file_mock)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual(2, stat_mock.call_count)
access_mock.assert_called_once_with(self.href_path, os.R_OK | os.W_OK)
copy_calls = [mock.call(file_mock.fileno(),
input_mock.__enter__().fileno(),
chunk_size * i,
fake_chunk_seq[i]) for i in range(4)]
copy_mock.assert_has_calls(copy_calls)
size_mock.assert_called_once_with(self.href_path)
@mock.patch.object(os, 'remove', side_effect=OSError, autospec=True)
@mock.patch.object(os, 'access', return_value=True, autospec=True)
@mock.patch.object(os, 'stat', autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_download_hard_link_fail(self, _validate_mock, stat_mock,
access_mock, remove_mock):
_validate_mock.return_value = self.href_path
stat_mock.return_value.st_dev = 'dev1'
file_mock = mock.MagicMock(spec=io.BytesIO)
file_mock.name = 'file'
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual(2, stat_mock.call_count)
access_mock.assert_called_once_with(self.href_path, os.R_OK | os.W_OK)
@mock.patch.object(os, 'sendfile', side_effect=OSError, autospec=True)
@mock.patch.object(os.path, 'getsize', return_value=42, autospec=True)
@mock.patch.object(builtins, 'open', autospec=True)
@mock.patch.object(os, 'access', return_value=False, autospec=True)
@mock.patch.object(os, 'stat', autospec=True)
@mock.patch.object(image_service.FileImageService, 'validate_href',
autospec=True)
def test_download_copy_fail(self, _validate_mock, stat_mock, access_mock,
open_mock, size_mock, copy_mock):
_validate_mock.return_value = self.href_path
stat_mock.return_value.st_dev = 'dev1'
file_mock = mock.MagicMock(spec=io.BytesIO)
file_mock.name = 'file'
input_mock = mock.MagicMock(spec=io.BytesIO)
open_mock.return_value = input_mock
self.assertRaises(exception.ImageDownloadFailed,
self.service.download, self.href, file_mock)
_validate_mock.assert_called_once_with(mock.ANY, self.href)
self.assertEqual(2, stat_mock.call_count)
access_mock.assert_called_once_with(self.href_path, os.R_OK | os.W_OK)
size_mock.assert_called_once_with(self.href_path)
class ServiceGetterTestCase(base.TestCase):
@mock.patch.object(glance_v2_service.GlanceImageService, '__init__',
return_value=None, autospec=True)
def test_get_glance_image_service(self, glance_service_mock):
image_href = uuidutils.generate_uuid()
image_service.get_image_service(image_href, context=self.context)
glance_service_mock.assert_called_once_with(mock.ANY, None,
self.context)
@mock.patch.object(glance_v2_service.GlanceImageService, '__init__',
return_value=None, autospec=True)
def test_get_glance_image_service_url(self, glance_service_mock):
image_href = 'glance://%s' % uuidutils.generate_uuid()
image_service.get_image_service(image_href, context=self.context)
glance_service_mock.assert_called_once_with(mock.ANY, None,
self.context)
@mock.patch.object(image_service.HttpImageService, '__init__',
return_value=None, autospec=True)
def test_get_http_image_service(self, http_service_mock):
image_href = 'http://127.0.0.1/image.qcow2'
image_service.get_image_service(image_href)
http_service_mock.assert_called_once_with()
@mock.patch.object(image_service.HttpImageService, '__init__',
return_value=None, autospec=True)
def test_get_https_image_service(self, http_service_mock):
image_href = 'https://127.0.0.1/image.qcow2'
image_service.get_image_service(image_href)
http_service_mock.assert_called_once_with()
@mock.patch.object(image_service.FileImageService, '__init__',
return_value=None, autospec=True)
def test_get_file_image_service(self, local_service_mock):
image_href = 'file:///home/user/image.qcow2'
image_service.get_image_service(image_href)
local_service_mock.assert_called_once_with()
def test_get_image_service_invalid_image_ref(self):
invalid_refs = (
'usenet://alt.binaries.dvd/image.qcow2',
'no scheme, no uuid')
for image_ref in invalid_refs:
self.assertRaises(exception.ImageRefValidationFailed,
image_service.get_image_service, image_ref)